missing power

[kotte]

Hi

I have a problem whit my K2

Normal power 0n 80 meter

5 watt on 40

0.2 watt on 30

2 watt on 20

7 watt on 17m

8 wat on 15 and 12 meter

9 watt on 10 meter

I rebuilt the bandpass filter and i am sure there are the right components
(band pass 30 and 20 meter)

I checked the low pass filter and that looks also alright

Any body a suggestion?

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[Don Wilhelm]

I can offer no real suggestion with that sketchy data - other than ti
say "it is not working right:>).

To obtain more information about where it is failing, I suggest you turn
the manual to Appendix E and do the Transmit Signal Tracing steps
indicated there.  You will need an RF Probe or a 'scope with the 10X
probe.  The expected values listed are for an RF probe.  If you are
using a 'scope, multiply those values by 3 to obtain the approximate
peak to peak RF voltage indicated on a 'scope.

What you are looking for is the first stage where the RF voltage is
substantially less than the expected values.  That is the output of the
stage that is giving trouble.

Since you have the lowest output on 30 meters, I suggest you use that
band instead of 40 meters.

Be certain to connect a dummy load on the K2.  Do not use an antenna.

73,
Don W3FPR

On 6/25/2017 12:01 PM, kotte wrote:

> Hi
>
> I have a problem whit my K2
>
> Normal power 0n 80 meter
>
> 5 watt on 40
>
> 0.2 watt on 30
>
> 2 watt on 20
>
> 7 watt on 17m
>
> 8 wat on 15 and 12 meter
>
> 9 watt on 10 meter
>
> I rebuilt the bandpass filter and i am sure there are the right components
> (band pass 30 and 20 meter)
>
> I checked the low pass filter and that looks also alright
>
> Any body a suggestion?
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html
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